EP0445515A2 - Dispositif de fabrication d'un profilé marbré en matière thermoplastique - Google Patents

Dispositif de fabrication d'un profilé marbré en matière thermoplastique Download PDF

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Publication number
EP0445515A2
EP0445515A2 EP91100933A EP91100933A EP0445515A2 EP 0445515 A2 EP0445515 A2 EP 0445515A2 EP 91100933 A EP91100933 A EP 91100933A EP 91100933 A EP91100933 A EP 91100933A EP 0445515 A2 EP0445515 A2 EP 0445515A2
Authority
EP
European Patent Office
Prior art keywords
plastic
insertion shaft
marbling
shaft
extruder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91100933A
Other languages
German (de)
English (en)
Other versions
EP0445515A3 (en
Inventor
Willi Laarmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
W Doellken and Co GmbH
Original Assignee
W Doellken and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by W Doellken and Co GmbH filed Critical W Doellken and Co GmbH
Publication of EP0445515A2 publication Critical patent/EP0445515A2/fr
Publication of EP0445515A3 publication Critical patent/EP0445515A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • B29C48/175—Articles comprising two or more components, e.g. co-extruded layers the components having different colours comprising a multi-coloured single component, e.g. striated, marbled or wood-like patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Definitions

  • the invention relates to a device for producing a marbled profile made of thermoplastic material, - with an extruder with an extruder housing and at least one screw shaft, a profile-giving extrusion die with a tool housing and a device for introducing a marbling plastic into the volume flow of the base plastic processed in the extruder, whereby the device for introducing the marbling plastic has an insertion shaft with at least one insertion channel and a nozzle bore for the marbling plastic.
  • - Marbled profiles made of thermoplastic are required in a wide variety of branches of technology, particularly in the furniture industry, for example as so-called edge strips.
  • the insertion shaft can open both in the area of the extruder housing and in the area of the tool housing.
  • the insertion shaft is firmly inserted into the extruder housing or also into the tool housing. It cannot rotate.
  • the introductory shaft opens into the volume flow of the basic plastic upstream of the worm shaft, but does not dive into the volume flow of the basic plastic. It ends in the wall of the housing, as it were.
  • the worm shaft is equipped with moving paddles.
  • the marbling effect depends on the number of revolutions of the worm shaft and the ratio of the volume flows on the one hand of the basic plastic and on the other hand of the marbling plastic. It can only be varied within limits.
  • practice increasingly demands marbled profiles not only with different profile cross-sections, but also different marbling effect.
  • the profile cross section can be easily changed by designing the extrusion tool. However, because of the relationships mentioned above, this does not apply to the marbling effect.
  • the invention has for its object to develop a device of the structure described above so that the marbling effect can be changed independently of the number of revolutions of the worm shaft and regardless of the flow rates.
  • the invention teaches that the insertion shaft is driven rotatably about its axis and its number of revolutions is adjustable or controllable independently of the number of revolutions of the worm shaft. In this way, the insertion shaft becomes a driven shaft. It is understood that this is connected to a corresponding drive. According to the invention, an additional degree of freedom has been created for influencing the marbling effect.
  • a preferred embodiment of the invention is characterized in that the insertion shaft is immersed in the mass flow of the base plastic, for example protrudes by a few centimeters in order to achieve an internal mixing of the marbling plastic, as it were, but which is also visible in the surface.
  • the immersion depth can be adjustable.
  • An introduction shaft for marbling plastic, which is immersed in the volume flow of the basic plastic, is known per se (cf. DE 37 17 967.5-09), but rotates at this known embodiment of the insertion shaft, so that these known measures do not solve the problem on which the invention is based.
  • the insertion shaft has various insertion channels and corresponding nozzle bores in order to bring marbling plastic of different colors into the volume flow of the basic plastic.
  • a preferred embodiment which leads to very pronounced marbling effects, is characterized in that the insertion shaft has a nozzle head and in the nozzle head a plurality of nozzle bores, which are expediently branched with respect to the axis of the insertion shaft.
  • Devices for producing a marbled profile made of thermoplastic material, which work with a rotating nozzle head, are known per se (cf. DE 37 00 724.6-09). In this known embodiment, however, the nozzle head is connected to the worm shaft, so that an additional degree of freedom for influencing the marbling effect is not achieved in this known embodiment either.
  • the insertion shaft can be arranged radially. Radial means in relation to a housing with a circular cross section or flow channel for the base plastic, which can be both the tool housing and the extruder housing.
  • a preferred embodiment of the invention which primarily leads to an almost helical distribution of the marbling plastic in the mass flow of the base plastic and consequently further improves the marbling effect, is characterized in that the insertion shaft is arranged obliquely to the direction of flow of the mass flow.
  • the inclination can be adjusted using an appropriate Implement joint can be adjustable. It goes without saying that this also applies to the nozzle head if the insertion shaft is provided with a nozzle head. It is within the scope of the invention to arrange the insertion shaft outside the center of the flow of the basic plastic, as it were eccentrically.
  • the device shown in the figures is used to produce a marbled profile made of thermoplastic material.
  • the basic structure includes an extruder with an extruder housing 1 and an exemplary embodiment of a screw shaft 2, a profile-giving extrusion tool with a tool housing 3 and a device 4 for introducing a marbling plastic.
  • the marbling plastic is introduced into the volume flow of a basic plastic processed in the extruder 1, 2.
  • the device 4 for introducing the marbling plastic has an insertion shaft 5 with at least one insertion channel 6 for the marbling plastic into the mass flow of the basic plastic. This insertion channel 6 has been indicated in the figures. It leads to a nozzle bore 7 from which the marbling plastic emerges.
  • the insertion shaft 5 is rotatably driven about its axis. Its number of revolutions can be set or controlled independently of the number of revolutions of the worm shaft 2. It is within the scope of the invention to integrate the control into a control loop for certain effects.
  • the insertion shaft 5 projects into the mass flow of the basic plastic with a section of its length.
  • the insertion shaft 5 also has the nozzle bore 7 for the exit of the marbling plastic.
  • the insertion shaft 5 is provided with a nozzle head 8 which has a plurality of nozzle bores 7 which are branched in the exemplary embodiment.
  • the insertion shaft 5 is arranged radially.
  • the axis of the insertion shaft runs obliquely to the direction of flow of the mass flow. 3 makes it clear that the insertion shaft 5 can also open outside the center of the mass flow of the basic plastic.
  • the nozzle head 8 can also be designed asymmetrically.
  • the insertion shaft 5 will be arranged in an area in which the volume flow of the basic plastic still has a swirl component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP19910100933 1990-03-07 1991-01-25 Apparatus for manufacturing a marble surfaced profile from thermoplastic material Withdrawn EP0445515A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007234 1990-03-07
DE4007234A DE4007234A1 (de) 1990-03-07 1990-03-07 Vorrichtung zum herstellen eines marmorierten profils aus thermoplastischem kunststoff

Publications (2)

Publication Number Publication Date
EP0445515A2 true EP0445515A2 (fr) 1991-09-11
EP0445515A3 EP0445515A3 (en) 1991-10-23

Family

ID=6401646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910100933 Withdrawn EP0445515A3 (en) 1990-03-07 1991-01-25 Apparatus for manufacturing a marble surfaced profile from thermoplastic material

Country Status (4)

Country Link
US (1) US5088909A (fr)
EP (1) EP0445515A3 (fr)
CA (1) CA2037671C (fr)
DE (2) DE9007494U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009401A3 (fr) * 1995-05-29 1997-03-04 Stillemans Catherine Procede d'extrusion et installation pour la mise en oeuvre de ce procede.
WO2011042568A2 (fr) 2009-10-07 2011-04-14 Dirk Wildemeersch Dispositif et méthode de stérilisation réversible en ambulatoire

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5626892A (en) * 1993-11-24 1997-05-06 Nabisco, Inc. Method for production of multi-flavored and multi-colored chewing gum
US6626206B1 (en) 2000-01-20 2003-09-30 Extrusion Dies, Inc. Feedblock for adjusting the dimensions of a set of co-extruded layers of a multi-layer sheet
DE202007013318U1 (de) * 2007-09-21 2008-01-03 Mauser-Werke Gmbh Vorrichtung und deren Verwendung zur Herstellung von Kunststoff-Behältern mit Sichtstreifen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110398B (de) * 1959-10-13 1961-07-06 Rehau Plastiks Vorrichtung zur Herstellung von stranggepressten Kunststofferzeugnissen mit mehrfarbigen Oberflaecheneffekten
DE1201041B (de) * 1962-07-10 1965-09-16 Kloeckner Humboldt Deutz Ag Schneckenstrangpresse fuer plastische Massen, z. B. thermoplastische Kunststoffe
DE2122604A1 (de) * 1970-05-13 1971-11-25 Sordelli & C Spa Maschine und Verfahren zur Herstellung von einer mit streifenweise angeordneten Scheckigkeiten versehenen thermoplastischen Folie
DE2230530A1 (de) * 1972-06-22 1974-01-10 Krauss Maffei Ag Maschine zum erzeugen einer kunststoffschmelze
FR2351776A1 (fr) * 1976-05-19 1977-12-16 Dynamit Nobel Ag Procede et dispositif d'extrusion de bandes de matieres thermoplastiques comportant un dessin
WO1982001160A1 (fr) * 1980-09-26 1982-04-15 Proske T Ameliorations se rapportant aux machines de moulage par injection
EP0303728A1 (fr) * 1987-08-21 1989-02-22 Schumacher, Walter Dr. Ing. Dispositif pour extruder, expanser et/ou traiter thermiquement des matières ou des mélanges de matières

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632204A (en) * 1951-02-14 1953-03-24 Eastman Kodak Co Apparatus for the continuous extrusion of decorative thermoplastic sheets
US3531828A (en) * 1967-01-03 1970-10-06 Rowland Products Inc Apparatus for making synthetic plastic sheet material with color pattern
DE2117045C3 (de) * 1971-04-07 1975-09-18 Bayer Ag, 5090 Leverkusen Strangpresse zum Herstellen von Profilen aus thermoplastischen Kunststoffen mit Mehrfarbeneffekt
US3664789A (en) * 1971-05-12 1972-05-23 American Optical Corp Rotary extrusion die
US3914362A (en) * 1972-07-21 1975-10-21 Rowland Products Inc Method for producing multicolor patterns in synthetic plastic sheet material
DE3538116C3 (de) * 1985-10-26 1993-12-23 Rehau Ag & Co Vorrichtung zur Herstellung von marmorierten Profilen, Leisten, Bändern oder dergleichen
DE3700724C1 (de) * 1987-01-13 1988-04-21 Doellken & Co Gmbh W Strangpresswerkzeug zum Herstellen von marmorierten Profilen
DE3717967A1 (de) * 1987-05-27 1988-12-15 Doellken & Co Gmbh W Strangpresswerkzeug zum strangpressen eines marmorierten profils aus thermoplastischem kunststoff

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110398B (de) * 1959-10-13 1961-07-06 Rehau Plastiks Vorrichtung zur Herstellung von stranggepressten Kunststofferzeugnissen mit mehrfarbigen Oberflaecheneffekten
DE1201041B (de) * 1962-07-10 1965-09-16 Kloeckner Humboldt Deutz Ag Schneckenstrangpresse fuer plastische Massen, z. B. thermoplastische Kunststoffe
DE2122604A1 (de) * 1970-05-13 1971-11-25 Sordelli & C Spa Maschine und Verfahren zur Herstellung von einer mit streifenweise angeordneten Scheckigkeiten versehenen thermoplastischen Folie
DE2230530A1 (de) * 1972-06-22 1974-01-10 Krauss Maffei Ag Maschine zum erzeugen einer kunststoffschmelze
FR2351776A1 (fr) * 1976-05-19 1977-12-16 Dynamit Nobel Ag Procede et dispositif d'extrusion de bandes de matieres thermoplastiques comportant un dessin
WO1982001160A1 (fr) * 1980-09-26 1982-04-15 Proske T Ameliorations se rapportant aux machines de moulage par injection
EP0303728A1 (fr) * 1987-08-21 1989-02-22 Schumacher, Walter Dr. Ing. Dispositif pour extruder, expanser et/ou traiter thermiquement des matières ou des mélanges de matières

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009401A3 (fr) * 1995-05-29 1997-03-04 Stillemans Catherine Procede d'extrusion et installation pour la mise en oeuvre de ce procede.
WO2011042568A2 (fr) 2009-10-07 2011-04-14 Dirk Wildemeersch Dispositif et méthode de stérilisation réversible en ambulatoire

Also Published As

Publication number Publication date
EP0445515A3 (en) 1991-10-23
DE9007494U1 (fr) 1992-02-20
DE4007234A1 (de) 1991-09-12
CA2037671A1 (fr) 1991-09-08
US5088909A (en) 1992-02-18
CA2037671C (fr) 2000-02-01
DE4007234C2 (fr) 1992-02-27

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